21994209

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{4957}}^1$

素因数の和:5009

約数の個数: 24

約数和(自身を含む): 34805160

約数和(自身を除く): 12810951

約数列:

[1, 3, 9, 17, 29, 51, 87, 153, 261, 493, 1479, 4437, 4957, 14871, 44613, 84269, 143753, 252807, 431259, 758421, 1293777, 2443801, 7331403, 21994209]

約数ペア:

[(1, 21994209), (3, 7331403), (9, 2443801), (17, 1293777), (29, 758421), (51, 431259), (87, 252807), (153, 143753), (261, 84269), (493, 44613), (1479, 14871), (4437, 4957)]